Well yes sorry, I'm getting users complaining of slow speeds. Mentioned it before, but here is the brief. Head office in Exeter, remote office in Yeovil and Plymouth. Both remote offices run software off one of our Exeter ones via TS. I ran this test yesterday with Yeovil as the iperf server and my laptop here in Exeter as the client and got those speeds. This morning I got 360 transferred at 289 bandwidth. Reversed I got 216 and 155.

The broadband connection in Yeovil is running between 3-4mb and 3mb in Exeter. Online status's from the router page are 832000 Up and 2432000 Down in Exeter and 448000 Up and 4544000 Down in Yeovil.

Problem is that extra users have been added, which I'm assuming therefore has diminished the connection and I'm about to add a 3rd site into the equation.

We've had various people in with the options of Citrix, and bonding extra lines together in our Exeter office through a Wan box before going into our ISA box. and staying with TS. At the moment the VPN is going straight into our switch. Again I'm assuming that the issue is on our Exeter upload speed due to volume of people connecting in?

On a side not, something which I think has nothing to do with those speeds, our web link in Exeter slows down considerably over the course of the day. I can get download speeds of 300k in the morning, but 30k in the afternoon. Web browsing should be down to a minimum courtesy of the ISA box, but then someone must be doing something.

Sorry for the long post, just really hope you guys can help, constantly got the manager in Yeovil shouting because of the bad connection, but no-one can seem to pinpoint the problem and come up with a sensible solution.

Ok. Bandwidth really isn't the MAJOR concern at this point, but is one of them.

1] By TS I assume you mean Windows TS?
2] How many users total connect to Exeter?
3] How many users in Exeter?
4] Are remote offices VPN via PPTP/IPSEC, or just TCP 3389 over Internet?
5] Can you get protocol report in ISA (I'm not an ISA guy... We did some extensive testing for customers and deemed it not suitable for HA)
6] What is your bandwidth at each location? I see you posted up/down, but I'm thinking you mean that as current throughput.

Just to summarize, what it sounds like is that you really need QOS. The issue with TS/Citrix traffic is that it's really latent sensitive. If you have normally bursty traffic it can create severe jitter which translates to poor screenpaint performance for your users. Of course, bandwidth is also a concern but there are some other factors that we want to consider. VPN is one of them. TS/Citrix/VOIP packets are all fairly fixed length SMALL payload packets. Many crypto platforms base their performance on encrypting "N" packets per second through a processor. "N" is almost always based on 1500 byte packets so one of the possibilities is that you're simply stomping what's providing your VPN. (Assuming that you're doing this via VPN)

Last but not least. If you can't get stats from your ISA box, let's look at your routers. Maybe we can gather some base stats to figure out what that majority of your traffic is.

Thanks O111111O, I appreciate your help. I'll try and answer these questions as best as I can.

1] Yep Windows Terminal Services
2] I have about 6 connecting from Yeovil at any one time and about 3 from Plymouth
3] Probably got about about 20 people connected to that server in Exeter at any one time
4] The connection type on the router in Yeovil is showing as PPTP/MPPE
5] Unsure about the protocol report in ISA. I have some connectivity verfiers setup to the other offices. They are currently sat at 125 and 109msecs although I had an alert to say that it had gone over the threshold of 500msec and lost connection at 01:20 Friday morning, when no-one would of been working.
6] Sorry unsure how to measure the bandwidth. Again looking at the router in Yeovil (all VPN routers are Draytek Vigor 2600's, the diagnostic tools I can run are as follows

I have spoken to our ISP as my general web speed in our Exeter office (which is a seperate line to the VPN) is suffering from download speeds. In the morning I can get 300k but by mid morning that drops to 30k, with no unusual bandwidth being used through ISA. They have mentioned they are suffering from slow ADSL speeds at the moment and their engineers are working on it. They told me all of our lines are affected, although the Yeovil one was synching at 1.5mb and seemed ok, they think some of the problem could be them.

Obviously I can't wait for them as they can't give me a date of when they will fix it, but I need to try and find some solution, before it cripples us.

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